Deep submersible pump down well before the installation steps Deep well submersible pump acceptance: Users to the logistics company to carefully check the acceptance of the cable jacket to see if there is no damage. Whether the pump is broken. 2. Handling: Loading and unloading car to be careful, so as not to damage the concentricity of the unit or break the cable insulation. 3. The whole unit before going to the underground inspection steps: A. Disassemble the filter, use the pry bar toggle the coupling should be flexible, B will pump upright filled with water, then a good cable connector, Rocker probe to ground resistance (single finger connector on the water insulation resistance) value of not less than 500 megohm. C. Put the pump upright Put a suitable container to the pump outlet plus washing powder water, while slightly moving the motor start button carefully observe the pump steering, the time shall not exceed 2 seconds, the succession mark. 4. Pump split when the site assembly steps: A. Installation of the motor stand upright, open the vent hole and water injection hole, be sure to be two water blocking all open, fill the water fill the water plug and drain plug tighten , Observe whether there is leaking motor phenomenon, such as the phenomenon of water leakage must not go down, the reason may be bump in the transport process should be promptly contact the agent or manufacturer consultations to resolve until the leak (observe 10 to 15 minutes). Then shake the motor insulation resistance, the value of not less than 50 megohms. B. bandage cable connector, wrapped and then try the motor steering, motor steering in the direction of the arrow marked on the pump is consistent, and make the follow-up mark. Pump split when the pump check A. Remove the upper casing of the pump to expose the uppermost impeller, B. Turn the impeller by hand to see if it is flexible. C. Pull the impeller in the direction of the pump shaft to observe the total amount of channeling of the impeller at seven levels (generally 4-6 mm of QJ pump) Install the coupling and the motor together into one so that the motor shaft and the shaft of the pump should not be tight. E. See the impeller up and down the amount of clearance, it should be in the middle of the total amount of channeling (tolerance ± 0.5 mm). F. deviations of greater than 0.5 mm with adjusting shims to adjust to the middle of the manual rotation of the impeller should be flexible. G. Then drill the top hole of the coupling, tighten the top wire to install the upper shell. H. Once again use the pry bar toggle the coupling should be flexible and fit for a week. Then install the filter and retaining wire slot box. 6 deep well submersible pump down: before going down well with a rope hanging in the same length of the log or pipe (diameter equal to the maximum diameter of the unit) test well tube integrity. In order to avoid stuck wells when the next crew. (In particular, the new wells under the first pump, the mine is not required for this step). 7. Cable Binding: The cable tie to the pipe with insulated cable tie, do not use wire. 8 unit control and start: control equipment selection. Motor power × 1.2-1.4 times = control cabinet power. Control cabinet to have phase, overload, over current and short circuit protection. After the wells have been installed, the test machine is started. The start-up time is 10-25 seconds depending on the motor power. The start-up time of the high-power motor should be relatively long. Check whether the current is overloaded and the three-phase current is balanced. And feedback manufacturers as a basis for warranty. 9. Overload, overcurrent, phase loss, short circuit, sensitivity debugging: This step is very important, please install the staff to debug carefully. A. Overload overcurrent debugging: The thermal relay current adjustment knob, slowly to the direction of less than the actual operating current rotation, each rotating a small scale, at intervals of 2-5 minutes until the thermal relay stop working until the unit. Then reverse the rotation a little scale can be. B. phase loss sensitivity debugging: the unit to start again, and one by one to disconnect the switch fuse switch unit, the unit is in two-phase power state. Observe if the thermal relay shuts off the control power within 5 seconds. C. Short circuit test: This step is usually to rely on the power supply system to protect the air switch. Generally not for field test (more dangerous) requires the power supply system must be equipped with air switch (air switch model preferred DW10, second choice DZ). More than 8 please use the unit's installation and commissioning personnel, mechanical and electrical maintenance personnel to read carefully, remember! Deep submersible pump inspection and preparation before going to the well 1, should be able to lift 3 meters above the height of the unit can withstand the weight of all lifting equipment (preferably cranes), and tripods, pallets, wrenches, screwdrivers, wire cutters, 500V megameters, insulation rubber Self-adhesive tape and other equipment installed. 2, check the motor installation size and installation size of the pump is consistent with the motor power is appropriate. 3, check the power supply voltage, frequency, whether the motor nameplate match, the control cabinet parameters used with the motor match. 4, Check the power cable for damage, its specifications are reasonable, and the cable into the water 6 hours, with 500V insulation resistance meter to measure the insulation resistance of its ground should be not less than 500 megohm. (Single finger joints on the water insulation resistance) Lead the cable and power cable docking 1, stripped the outer sheath of the cable and the main insulation layer, exposing the copper 35-40mm, will be near the core part of the rubber repair tapered, the oxide layer on the core polished clean, and with alcohol (preferably hydrochloric acid Wipe the core and the insulation to be wrapped, sheathing and allow it to dry naturally. 2, connector 1) Power cable 2) PVC adhesive tape 3) Self-adhesive butyl rubber tape 4) φ1mm copper wire 5) Solder 6) Cable 3, ready 500W electric iron, rosin, solder, lmm bare copper wire and insulation tape. 4, Tighten the bare cable evenly cable core, electric iron heating, tin seepage, require infiltration, infiltration. Use a file to repair the smooth welding part (burrs and cuspters are not allowed), and wipe the part to be bandaged again with alcohol to dry. 5, first self-adhesive butyl tape semi-stacked three, and gradually extended to the outer core. Banding tape must be stretched 200%, then the outer layer of PVC tape semi-overlapping package of three, but also gradually extended out to ensure that the dressing part of not less than 200mm. 6, three-core cable connector should be staggered three connector position a certain distance, to prevent short circuit. 7, leads to the cable when the dual cable connection method 1) cable after the end of shaking cable and motor (without water) insulation resistance, the value of not less than 150 megohms, 2) After the motor is filled with water, shake the insulation resistance of the motor windings again should not be less than 40 megohms, 3) Turn on the power test (time does not exceed 2 seconds). Good follow-up position mark, 4) Began to go down: continuously measure the change of insulation resistance while drilling down to prevent the wall from hanging up the insulation of the cable. If it is found that the insulation level drops rapidly below 0.5 Megohm, the unit should be put on to detect the reason. If there is no accident, after the completion of the well you can start the trial operation by the steps mentioned above. Deep submersible pump use and maintenance 1. Startup: (1) Electric pumps under 11kW are allowed to start directly, and electric pumps above 13kw should be equipped with buck starters to protect the safe operation of electric pumps. (2) In order to avoid the electric pump rotor instantaneous channeling and reduce the starting load, the pump should start the trip to the outlet valve to 3/4 Department (leaving 1/4 air gap to deflate) to be started after the water slowly Open, to the pump operating point control in place. (3) After the start-up is completed and started, the monitoring and observation of water level should be strengthened to ensure that the electric pump operates within the working conditions. After the electric pump runs smoothly, it can be put into formal operation. (4) 5 minutes after the deep well submersible pump is put into operation for the first time, the thermal insulation resistance should be measured immediately when shutting down, and the value should not be less than 0.5MΩ to continue to use. 2. stop pump: Deep well submersible pump downtime, in order to prevent water backflow, cut off the power at the same time to close the valve, restart more than 20 minutes apart. Deep well submersible pump operation and maintenance: (1) Deep well submersible pump should work at the design working point. At this time, the axial force is moderate, the pump efficiency is the highest and the most economical and reliable. (2) deep submersible pump every 8 hours of operation to be a full inspection, whether there is any change in the instrument, the circuit node is heating, the sound is normal. Deep submersible pump normal working current is greater than the motor brand name rating. 4. In one of the following situations, stop the pump immediately: (1) deep submersible pump working current suddenly higher than the rated current of the motor (2) out of water is not normal, intermittent water, sediment increased (3) Motor insulation resistance is less than 0.5 megohms (4) The unit has obvious noise and aggravating (5) grid voltage is less than 5% of the rated voltage (6) fuse burned one phase (7) water pipeline damage 5. Use and maintenance precautions: (1) Check the current voltage and outlet pressure every day, check the water level every 2 weeks, and make a record. (2) Inspect the motor insulation resistance every 4 weeks and make a note of it. (3) use to minimize the number of starts. (4) If the submersible pump is not used continuously after it goes down, it should be started once a week and run for 5-10 minutes to prevent the pump from starting due to corrosion. 6. Deep submersible pump storage and handling: When storing the deep submersible pump, put the net water in the motor chamber and wipe the surface dry. The shaft coupling must be coated with anti-rust grease and should be erected. (To prevent deformation of the rotor) in dry, non-corrosive chemicals at room temperature, the temperature in winter is not lower than -3 ℃. Concrete Vibrator,High Quality Concrete Vibrator,Concrete Vibrator Details, CN Jining Furuide Machinery Manufacturing Co., Ltd. , https://www.furdroller.com